Option(d)is the answer...
We know that area of the triangle is 1/2bh
=>1/2*7.2*4.8
=>3.6*4.8
=>17.28in sq....
=>17.3in sq(approx)....
Hope this helps u.....
3(3)/5(3) + 2(5)/3(5) = 9/15 + 10/15 = 19/15
By the power and chain rules, taking derivatives on both sides with respect to gives
or
By using the <em>area</em> formulae for triangles and rectangles and the concept of <em>surface</em> area of the <em>composite</em> figure is equal to 1108 square inches.
<h3>What is the surface area of the composite figure?</h3>
The <em>surface</em> area is the area of all faces of a solid. In this case, we must sum the areas of seven <em>rectangular</em> and two <em>triangular</em> faces to determine the <em>surface</em> area:
A = 2 · (0.5) · (12 in) · (9 in) + 2 · (11 in) · (20 in) + 2 · (5 in) · (20 in) + 2 · (5 in) · (12 in) + (12 in) · (20 in)
A = 1108 in²
By using the <em>area</em> formulae for triangles and rectangles and the concept of <em>surface</em> area of the <em>composite</em> figure is equal to 1108 square inches.
To learn more on surface areas: brainly.com/question/2835293
#SPJ1
Sum = -3
First no. = -15/7
Second no. = (-3) - (-15/7)
= -3 + 15/7
= -21/7 + 15/7
= (-21 + 15)/7
= -6/7
The second no. is -6/7.